Pack of 5 S 36-37 Self Heating Soles

Eliminate chilly feet with amazing self-heating soles. Step outside on frosty days or potter indoors on chilly, hard floors with warm, toasty toes! Simply place these insoles into your favourite shoes or slippers and enjoy advanced self-heating technology that warms up to 48°C in just 5 seconds, and keeps feet cosy for up to 10 hours. Unisex. Choose Small 3-4, Medium 5-6, Large 7-8, XL 9-10.